JPH09329371A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by saving energy of an air conditioning system which uses both an air conditioner and an outdoor air conditioner and simplifying the operation system. SOLUTION: This air conditionins system is provided with an air conditioner 3 which circulatingly processes an indoor air and an outdoor air conditioner 1 which processes an outdoor air OA and introduces the processed air indoors where the outdoor air conditioner 1 is provided with a desiccant which adsorbs an indoor air or one content of the other open air while it is regenerated by the other way and a heat pump 200 which serves as a heat source by regenerating the desiccant. In this case, a humidifier 6 is provided in an air supply line from the outdoor air conditioner 1 up to the air conditioned space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system, and more particularly to an air conditioning system that uses both an air conditioner that circulates indoor air and processes it, and an outdoor air conditioner that processes outside air and guides it to the room.

[0002]

2. Description of the Related Art FIG. 13 shows an example of a conventional air conditioning system, which includes an air conditioner 3 which circulates and processes indoor air, and an air conditioner 11 which processes outside air and guides it to the room. This is an air conditioning system that is used together. The external conditioner 11 is a total heat exchanger (enthalpy heat exchanger), and simultaneously exchanges heat and sensible heat between the outside air and the indoor air. On the other hand, the air-conditioning load generated inside the air-conditioned space is taken out by the air conditioner (air conditioner using a heat pump) 3 in the room and is thrown out of the room.

[0003]

Since the total heat exchanger 11 as described above has a low efficiency of 50 to 55%, 50 to 45% of the moisture in the outside air enters the room. Since the water must be dehumidified by the air conditioner,
Then, it is necessary to lower the room air to a dew point temperature (15 to 16 ° C.) or lower, for example, about 10 ° C. After all, air conditioner 3
It is necessary to set the temperature difference (temperature head) between the evaporation temperature and the condensation temperature of (1) to be the same as when the total heat exchanger 11 is not used, and there is a drawback that the energy consumption becomes large.

In view of the above problems, it is an object of the present invention to reduce the cost by saving energy in an air conditioning system that uses both an air conditioner and an external air conditioner and simplifying the equipment.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 circulates indoor air and processes it, and outside air. And an external air conditioner that guides the air into the room, wherein the external air conditioner includes a desiccant that adsorbs water in one of the indoor air and the outside air and is regenerated by the other, and a heat pump that is a heat source that regenerates the desiccant. In the air conditioning system,
The air conditioning system is characterized in that a humidifier is provided in an air supply path from the external air conditioner to the air-conditioned space.

The external air conditioner is operated so that the desiccant adsorbs moisture in the outside air and is regenerated by the indoor air during cooling, and adsorbs the moisture in the indoor air and is regenerated by the outside air during heating. To be driven like.

With such a configuration, the air conditioning by the desiccant external air conditioner becomes highly efficient in the cooling operation, and the latent heat load can be processed extremely efficiently. Furthermore, if there is a margin in the latent heat load cooling capacity of the external air conditioner, by operating the humidifier, the sensible heat load of the air conditioning load can be borne by the highly efficient desiccant external air conditioner. A significant energy saving effect can be obtained by the operation control according to the above. Further, since it is not necessary to dehumidify by air conditioning, the operating temperature head of the air conditioner can be lowered, and a large energy saving is achieved together with high efficiency of the desiccant external air conditioner itself.

According to a second aspect of the present invention, there is provided a controller for providing a humidity sensor and a temperature sensor in the air-conditioned space, and controlling the operation of the air conditioner, the air conditioner and / or the humidifier based on the measured values. The air conditioning system according to claim 1, further comprising: As a result, the sensor detects the air-conditioning state in the air-conditioned space, and the control device controls the external air conditioner, the air conditioner and / or the humidifier accordingly, so that the control for obtaining a comfortable space is easy. Is. In addition, it is easy to form a product in which the external air conditioner and / or the air conditioner and the humidifier are integrated.

According to a third aspect of the present invention, the temperature and humidity or these parameters are set in advance in the control device, and when the measured temperature exceeds the upper limit of the set temperature and the measured humidity falls below the lower limit of the set humidity, The air conditioning system according to claim 3, wherein the humidifier is operated. The invention according to claim 4 uses a dry-bulb temperature sensor as the temperature sensor.
The air conditioning system according to item 1.

The invention according to claim 5 is the air conditioning system according to claim 2, characterized in that an absolute humidity sensor is used as the humidity sensor. The invention according to claim 6 is the air-conditioning system according to claim 3, characterized in that a wet-bulb temperature is used as the parameter of the humidity. The invention according to claim 7 is the air conditioning system according to claim 1, wherein the humidifier performs humidification in an isenthalpic process or a quasi-isenthalpic process during cooling.

According to an eighth aspect of the present invention, the humidifier comprises:
The air conditioning system according to claim 1, wherein the air conditioning system is a water injection type or a vaporization type. The invention according to claim 9 is
The air conditioning system according to claim 1, wherein the heat pump is a vapor compression heat pump. The invention according to claim 10 is the air-conditioning system according to claim 1, wherein the heat pump is an absorption heat pump.

According to an eleventh aspect of the present invention, when the heat pump capacity of the external air conditioner has a margin, the capacity of the external air conditioner is increased and the air conditioner capacity is decreased. According to the first aspect of the present invention, the overall efficiency can be further increased by preferentially using the efficient external conditioner.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of an air conditioning system according to the present invention will be described below with reference to FIGS. FIG. 1 shows a basic configuration of an air conditioning system according to the present invention, in which an air conditioner 3 that circulates and processes air in a room 2 to be conditioned and an external air conditioner 1 that processes outside air and guides it into the room are used together. In addition, the humidifier 6 is provided in the path of treated air (outside air) between the external air conditioner and the air-conditioned space, and the humidifier 6 is provided with a water supply pipe 8 and an opening / closing valve 7. The air conditioner 3 may be an ordinary air conditioner that switches between a refrigerator and a heat pump, but any other air conditioner may be used.

As shown in FIG. 2, the external air conditioner 1 is a desiccant external air conditioner that uses a desiccant rotor 103 and a heat pump 200 that repeat adsorption and release (regeneration) of water.
That is, the desiccant outdoor air conditioner 1 is provided with the introduction path A for introducing the outside air into the room during the cooling operation and the discharge path B for discharging the indoor air to the outside of the room. The route A and the route B are used interchangeably at the time of heating, and the outside air is introduced into the route B and the indoor air is introduced into the route A. Such a usage pattern is known to those skilled in the art. Only the operation mode will be described.

Between the outside air introduction path A and the indoor air discharge path B, the desiccant rotor 103, the heat exchanger 104, and the heat pump 200 serving as a heat source of the desiccant external air conditioner 1 are provided. As the heat pump, an arbitrary one may be adopted. Here, a vapor compression heat pump proposed by the present applicant in Japanese Patent Application No. Hei 8-22133 is used.

In the outside air introduction route A, the outdoor space and the suction port of the blower 102 for introducing outside air are connected via a route 107, the discharge port of the blower 102 is connected to the desiccant rotor 103 via a route 108, and a desiccant. The outlet of the treated air of the rotor 103 is connected via a path 109 to a sensible heat exchanger 104 having a heat exchange relationship with the regeneration air, and the outlet of the treated air of the sensible heat exchanger 104 is a cold water heat exchanger (cooler). ) 21
0 through the path 110, and the outlet of the process air of the cooler 210 is formed by connecting with the indoor space through the path 111. This forms a cycle in which outside air is taken in, processed, and introduced into the room.

On the other hand, an air path (release path) B for regeneration
Connects the indoor space to the suction port of the blower 140 for the regenerated air via the path 124, and connects the discharge port of the blower 140 to the sensible heat exchanger 104 having a heat exchange relationship with the process air (outside air), The outlet of the regenerated air of the sensible heat exchanger 104 is connected to the hot water heat exchanger (heater) 220 via the path 126,
The outlet of the regeneration air of the heater 220 is the desiccant rotor 10
3 is connected to the regeneration air inlet via the path 127, and the desiccant rotor 103 has an outlet for the regeneration air connected to the outdoor space and the path 1.
It is formed by connecting via 28. Thus, a cycle is formed in which room air is taken in and exhausted to the outside.

The heat medium (hot water) inlet of the heater 220 is connected to the hot water passage outlet of the heat pump 200 via the path 221, and the hot water outlet of the heater 220 is connected to the hot water passage inlet of the heat pump via the path 222. . Further, the cold water inlet of the cooler 210 is connected to the cold water path outlet of the heat pump via the path 211, and the cold water outlet of the cooler 210 is connected to the cold water path inlet of the heat pump via the path 212. In the figure, the letters K to T surrounded by circles
Is a symbol indicating the state of air corresponding to FIG.
Represents supply air (processed outside air), RA represents return air (released indoor air), OA represents outside air, and EX represents exhaust air.

Next, the structure of the control system for controlling the air conditioning system will be described. This example is
Each of the three devices, that is, the external air conditioner 1, the air conditioner 3, and the humidifier 6 has a controller.
A humidity sensor 11 and a dry-bulb temperature sensor 21 are provided in the indoor space 2, and the detection signal of the humidity sensor 11 is transmitted through the signal path 15
Is transmitted to the controller 10 of the air conditioner 1, and the output signal of the dry-bulb temperature sensor 21 is transmitted to the controller 20 of the air conditioner 3 via the signal path 22. Reference numeral 30 is a controller of the humidifier 6, and the controllers 20, 10
Output of the controller 30 via the signal paths 31 and 32.
Has been entered.

Next, referring to FIG. 3, which is a Mollier diagram showing the operation of the air conditioning portion of the embodiment of FIG. 1, the operation of the desiccant external air conditioner using the heat pump having the above-mentioned structure as a heat source is described. And explain. The outside air (process air: state K) introduced is sucked by the blower 102 via the path 107, is pressurized, and passes through the path 108 to the desiccant rotor 10.
3, the moisture in the air is adsorbed by the desiccant rotor hygroscopic agent to lower the absolute humidity and the temperature of the air rises due to the heat of adsorption (state L). The air whose humidity has dropped and whose temperature has risen is sent to the sensible heat exchanger 104 via the path 109 and is cooled by exchanging heat with the return air (regenerated air) (state M). The cooled air passes through the path 110 and cooler 21.
Sent to 0 and further cooled (state N). The cooled air is supplied to the indoor space via the path 111. In this way, the enthalpy difference ΔQ is generated between the outside air (state K) and the supply air (state N), and the indoor air (state Q) is generated.
Also, an enthalpy difference and an absolute humidity difference occur between and, thereby cooling the indoor space.

The desiccant reproduction is performed as follows.
The room air for regeneration (RA: state Q) is sucked into the blower 140 through the path 124, and is boosted to increase the pressure of the sensible heat exchanger 10.
4, the treated air is cooled to raise its temperature (state: R), flows into the heater 220 through the route 126, is heated by hot water and is heated to 60 to 80 ° C., and the relative humidity is lowered. Yes (state S).

This process is a sensible heat change of the regenerated air, and the specific heat of the air is significantly lower than that of the hot water and the temperature change is large. Therefore, even if the flow rate of the hot water is decreased to increase the temperature change, the heat exchange is efficiently performed. Done. Since the flow rate is reduced by increasing the difference in the temperature of hot water used, the transport power is reduced.

The regenerated air, which has left the heater 220 and has a reduced relative humidity, passes through the desiccant rotor 103 to remove water from the desiccant rotor (state T). The regenerated air that has passed through the desiccant rotor 103 is discharged to the outside via the path 128 as exhaust gas. In this way, the desiccant is air-conditioned by repeating the desiccant regeneration and the dehumidification and cooling of the treated air.

FIG. 4 shows the flow of heat in the heat pump portion of the desiccant external air conditioner thus configured. In FIG. 4, heat input is heat input from cold water and compressor output power, and all heat output is added to hot water. Now, assuming that the compressor power is 1 heat quantity,
The temperature lift of this type of heat pump is at least 15
55 to draw heat from ℃ and raise it to 70 ℃
The temperature lift is 0 ° C, which is 22% higher than the temperature lift of a normal heat pump, which is 45 ° C, and the pressure ratio is slightly higher, so that the coefficient of operation can be designed to be about 3. Therefore, the heat input from cold water is 3, while the total heat output is 1 + 3, which is 4
And all of this heat heats hot water and is used in the desiccant external air conditioner.

The coefficient of operation (COP), which indicates the energy efficiency of a single desiccant air conditioner, is represented by the value obtained by dividing the cooling effect ΔQ in FIG. 3 by the amount of regeneration heat, and is approximately 0.8 to 1.2 at the maximum. It is generally reported.
Therefore, if the operation coefficient (COP) of the desiccant air conditioner is approximately 1, a cooling effect of 1 can be obtained by the desiccant air conditioner. Therefore, if the compressor input of the heat pump is 1, the amount of heat driven by the desiccant air conditioner is 4 Therefore, the cooling effect of 4 is obtained by the warm water. In the present air conditioning system, since there are three other cooling effects due to the cold water, a total of seven cooling effects are obtained. The operation coefficient of the whole desiccant external controller is: operation coefficient = cooling effect / compressor input = 7. This value greatly exceeds the value "4 or less" of the conventional system, and has an energy saving effect of about 45%.

On the other hand, energy saving is achieved also in the air conditioner 3. In other words, the desiccant external air conditioner 1 allows the air SA to be supplied into the room to have an absolute humidity lower than the return air RA, so that moisture does not have to be brought into the room. Therefore, there is no need to dehumidify the air conditioner 3,
Only sensible heat treatment of air is sufficient. Therefore, the air conditioner 3 only needs to cool the air to about 20 ° C., and the evaporation temperature can be increased by about 10 ° C. This reduces the size of the temperature head (eg, 40 ° C. to 30 ° C.). As a result, the energy saving rate is about 25% because ΔT1 / ΔT2 = 30/40 = 0.75.

As described above, the energy saving effect is obtained in both the external air conditioner 1 and the air conditioner 3, but the external air conditioner 1 has a larger energy saving effect. Therefore, it is more energy efficient to process the air conditioning load with the external air conditioner. Generally, the capacity of an air conditioner such as an external air conditioner and an air conditioner is determined in accordance with the maximum load, but in normal operation, it is rarely operated at the maximum load and is operated at a partial load. Therefore, the load of the sensible heat of the air conditioner can be increased by using the margin of capacity that occurs in the external air conditioner during such partial load, and the processing ratio of the air conditioning load by the external air conditioner can be increased, resulting in an energy saving effect. Will increase.

Next, the operation of operating the humidifier 6 will be described. FIG. 5 is a Mollier diagram showing the operation of the humidifier in the air-conditioned space. In FIG. 5, the air-conditioned space is adjusted to the range shown as the comfort zone in the figure. In such a space, the capacity of the air conditioner is adjusted by the air conditioner (air conditioner) 3 so that the dry-bulb temperature falls within a predetermined range, and the external air conditioner 1 controls the outside air conditioner 1 so that the relative humidity falls within a predetermined range. This can be achieved by adjusting the capacity of the built-in heat pump, but the capacity of the air conditioner 3 is decreased to raise the dry-bulb temperature and the capacity of the external air conditioner 1 is increased to increase the humidity (lower right in the figure). Area of the
The state can be shifted to the comfortable zone by performing water injection or humidification by the vaporization type humidifier.

The process of this state change will be described with reference to FIG. 3. In the state where the humidifier 6 is not operated, the treated air leaving the external air conditioner is in state N while the capacity of the external air conditioner is increased. When the valve 7 attached to the humidifier 6 is opened in this state, water is supplied to the humidifier 6 via the water supply pipe 8 and the air at the outlet of the humidifier 6 shifts to the state P. Thus, the sensible heat ratio (gradient of Q-N) between the state Q of the indoor air and the air supply when the humidification is not performed and the state Q of the indoor air when the humidification is performed and the air supply are performed. There is a difference from the sensible heat ratio (gradient of QP), and the latter has a larger sensible heat ratio. Therefore, the sensible heat can also be borne by the external conditioner 1, and the load burden ratio of the external conditioner 1 can be increased. Therefore, as described above, the large amount of air conditioning load can be processed by the external air conditioner having a high energy saving effect, so that the energy saving effect is further enhanced.

However, as described above, in FIG. 5, the energy saving effect and the comfortable environment can be obtained.
This is the case where humidification is performed from the shaded area in the lower right of the figure, and such a condition is satisfied when the dry-bulb temperature is higher than the set temperature and the humidity is lower than the set humidity. When this condition is not satisfied, for example, when the humidifier 6 is operated when the dry-bulb temperature is lower than the set value, the indoor temperature is lowered, and it becomes cold and uncomfortable, which causes an adverse effect that a comfortable environment cannot be maintained. In this embodiment, the humidifier 6 is operated in the following manner, and the energy saving effect can be obtained while maintaining a comfortable environment.

That is, the detection signal of the dry-bulb temperature sensor 21 in the room 2 is transmitted to the controller 20 of the air conditioner 3 via the signal path 22, and the temperature detected by the sensor 21 is the set dry-bulb of the air conditioner 3. When the temperature is higher than the temperature, an electric signal such as a contact signal is transmitted to the controller 30 of the humidifier 6 via the signal path 32. Further, the detection signal of the humidity sensor 11 in the room 2 is transmitted to the controller 10 of the external air conditioner via the signal path 15, and when the humidity detected by the sensor 11 is lower than the set humidity of the external air conditioner 1. Is
An electric signal such as a contact signal is sent through the signal path 31 to the humidifier 6
To the controller 30 of.

A signal for detecting that the temperature detected by the temperature sensor 21 is higher than the set dry-bulb temperature of the air conditioner 3, and the humidity detected by the humidity sensor 11 is lower than the set humidity of the external air conditioner 1. If the signals for detecting the presence of the humidifier are simultaneously satisfied, it means that the environment inside the room is in the shaded area in the lower right of FIG. 5, and therefore the condition for operating the humidifier 6 is satisfied. The valve 30 opens the valve 7 via the signal path 33 and supplies water from the water supply pipe 8 to operate the humidifier 6. The operation of the humidifier 6 lowers the dry-bulb temperature and increases the humidity, so that the indoor environment approaches the comfort zone.

The set values of the dry-bulb temperature and the humidity here do not necessarily have to be the control target values for the room 2, and may be special set values for the humidifier 6. Also, when the room temperature is extremely high, such as at the start of air conditioning, humidifying will increase the latent heat load of the air conditioner and increase the latent heat load of the external air conditioner. The temperature may be temporarily suspended by a method such as setting an upper limit to the temperature. Further, even in the heating operation, when the treated air introduced into the room needs to be humidified, a comfortable environment can be obtained by operating the humidifier 6 according to the present invention.

FIG. 6 shows another embodiment of the present invention. In the previous embodiment, the devices (outer air conditioner 1, air conditioner 3, humidifier 6) are basically independent, and each has three parts. It had three controllers, whereas in this embodiment it has three
One device is controlled by one controller 10 as a whole, and the outputs of the humidity sensor 11 and the temperature sensor 21 are input to this. The configurations and operations of the individual elements of the external air conditioner 1, the air conditioner 3, and the humidifier 6 are the same as those in the previous embodiment, and therefore their explanations are omitted.

The steps of controlling the air conditioning system will be described below with reference to FIGS. 7 to 10. It should be noted that the controller 10 is set in advance as a comfortable zone of the air-conditioned space 2 as shown in FIG.
As shown in, the upper and lower limits of the dry-bulb temperature, the upper and lower limits of the relative humidity, and the width of each dead zone are set (st1, s
t11).

As shown in FIG. 7, the controller 10 is
A signal from the indoor humidity sensor 11 is received by the path 15 (st2), and the set value for setting the humidity control target is compared with the detected value (st3). When the detected humidity is larger than the value obtained by adding the dead zone to the set humidity, a signal for increasing the heat pump capacity of the external controller 1 is transmitted via the path 13 to increase the desiccant regenerative heating capacity of the external controller. To increase the dehumidifying capacity (st4) and reduce the humidity of the air-conditioned space 2. On the other hand, when the detected humidity is smaller than the value obtained by subtracting the dead zone from the set humidity, a signal for reducing the capacity of the heat pump of the external controller 1 is transmitted via the path 13, and the desiccant regeneration heating capacity of the external controller 1 is transmitted. To decrease the dehumidifying ability (st5).

As shown in FIG. 8, the controller 10 further receives a signal from the dry-bulb temperature sensor 21 through the path 22 (st12), and compares the set value with the set target of the dry-bulb temperature control with the detected value. (St13), when the detected temperature is larger than the value obtained by adding the dead zone to the set temperature, a signal for increasing the capacity of the air conditioner 3 is transmitted via the path 23 to increase the sensible cooling capacity of the air conditioner 3. Indoor air is supplied (st14). On the other hand, when the detected temperature is smaller than the value obtained by subtracting the dead zone from the set temperature, a signal for reducing the capacity of the air conditioner 3 is transmitted via the path 23 to reduce the sensible heat cooling capacity (st15).

The control steps up to this point are for keeping the condition of the air-conditioned space 2 within the comfortable zone without using the humidifier 6. In the present invention, when the capacity of the heat pump of the external air conditioner 1 has a margin, for example, when the set rotation speed of the compressor does not reach the upper limit or when the capacity decrease signal is output, the compressor rotation speed is increased. When a signal that decreases the number of signals or a stop signal is output, a signal that detects this signal and increases the capacity of the external modulator is transmitted via the path 13 and at the same time, the signal of the external modulator 1 is transmitted. A signal for reducing the capacity of the external conditioner 3 by an amount commensurate with the capacity increase is transmitted via the path 23.

Then, as shown in FIG. 9, the controller 10 calculates the set wet-bulb temperature from the set humidity and the set dry-bulb temperature (st21), and calculates the detected wet-bulb temperature from the detected humidity and the detected dry-bulb temperature ( In st22), the set value of the wet bulb temperature and the detected value are compared (st23). When the wet-bulb temperature detected value is below the set value and the dry-bulb temperature detected value is above the set value,
0 indicates that the indoor environment is present in the shaded area in the lower right, indicating that the conditions for operating the humidifier 6 are satisfied. Therefore, a signal for opening the valve 7 is transmitted via the path 14. Then, the humidifier 6 is operated (st24). The operation of the humidifier 6 lowers the dry-bulb temperature and increases the humidity, so that the indoor environment approaches the comfort zone. On the other hand, when the detected value of the wet-bulb temperature is higher than the set value or the detected value of the dry-bulb temperature is lower than the set value, a signal for closing the valve 7 is transmitted via the path 14 and the humidifier 6 outputs. Stop the operation (s
t25).

11 and 12 show another embodiment of the present invention. Here, the wet-bulb temperature sensor provided in the air-conditioned space 2 with the external controller 1 and the humidifier 6 by one controller 10 is shown. 11 and the dry bulb temperature sensor 12 are controlled based on the detected values. The air conditioner 3 is separately provided with a controller 20, to which the output of the temperature sensor 21 provided in the room 2 is input.

The control process of the air conditioning system of this embodiment will be described below. The detection signal of the dry-bulb temperature sensor 12 in the room 2 is sent via the signal path 16 to the controller 10 of the external air conditioner 1.
Further, the detection signal of the humidity sensor 11 in the room 2 is transmitted to the controller 10 of the external air conditioner via the signal path 15. When the temperature detected by the dry-bulb temperature sensor 12 is higher than the set value and the humidity detected by the wet-bulb temperature sensor 11 is lower than the set value, the indoor area is shown in the lower right shaded area in FIG. Because it indicates that there is an environment of
The condition for operating the humidifier 6 is satisfied, and the controller 10 opens the valve 7 via the operation circuit 14 to supply water from the water supply pipe 8 to operate the humidifier 6.

The operation of the humidifier 6 lowers the dry-bulb temperature and increases the humidity so that the indoor environment approaches the comfort zone. In the process of water injection and humidification by a vaporization type humidifier, the wet-bulb temperature hardly changes and the dry-bulb temperature only decreases, so the wet-bulb temperature is set below the set value and the dry-bulb temperature is set by the present invention. If the humidification is performed on condition that the value is equal to or more than the value, steaminess due to excessive humidification can be avoided.

Further, since the control circuits 14 for the respective sensors 11, 12 and the humidifier feed valve 7 are connected to the controller 10 of the external controller 1, the controller 1 of the external controller 1 is connected.
Since 0 can independently control the humidifier 6 in accordance with the state of the room 2, it becomes easy to control the air conditioning in the room, and it is also possible to make a product that integrates the external conditioner and the humidifier. become.

The set values of the dry-bulb temperature and the wet-bulb temperature here do not necessarily have to be the control target values for the room 2, and may be special set values for the humidifier 6.
Although the wet-bulb temperature sensor 11 is used here, an appropriate enthalpy sensor may be used because the wet-bulb temperature and the enthalpy have the same characteristics on the psychrometric chart.

In any of the above-mentioned embodiments, when humidification is required for the treated air introduced into the room even during the heating operation, a comfortable environment can be obtained by operating the humidifier according to the present invention. To be Further, in each of the above-mentioned embodiments, the vapor compression heat pump is used as the heat pump 200, but according to the contents described above, any heat source device having a heat pump action may be used, for example, it is proposed in Japanese Patent Application No. 7-333053. Even if such an absorption heat pump is used, the same effect can be obtained. Further, in this embodiment, cold / hot water is used as the heat transfer medium, but instead of this, a method of directly utilizing the evaporation / condensation action of the refrigerant may be used.

[0046]

As described above, according to the present invention,
By combining a humidifier with a hybrid air-conditioning system that uses a heat pump and a desiccant, it is possible to increase the load ratio of the external air conditioner, which has a high energy saving effect while maintaining a comfortable environment, and reduces running costs. An air conditioning system can be provided. In addition, since the sensor detects the air-conditioning condition in the air-conditioned space and the control device controls the external conditioner, the air conditioner and / or the humidifier in response to this, the control for obtaining a comfortable space is simple. Also, it is easy to make a product in which the external air conditioner and / or the air conditioner and the humidifier are integrated.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a basic configuration of a first embodiment of an air conditioning system according to the present invention.

FIG. 2 is an explanatory diagram showing a basic configuration of the desiccant external controller according to the embodiment of FIG. 1;

3 is an explanatory diagram showing a Mollier diagram of an air desiccant air conditioning cycle according to the embodiment of FIG. 1. FIG.

FIG. 4 is an explanatory diagram showing heat transfer of a heat pump according to the air conditioning system of the present invention.

5 is a Mollier diagram illustrating a method of controlling the air conditioning system according to the embodiment of FIG.

FIG. 6 is an explanatory diagram showing a basic configuration of a second embodiment of the air conditioning system according to the present invention.

7 is a diagram showing a control flow of the air conditioning system in FIG.

8 is also a diagram showing a control flow of the air conditioning system of FIG.

9 is also a diagram showing a control flow of the air conditioning system of FIG.

10 is a Mollier diagram for explaining the control method of the air conditioning system according to the embodiment of FIG.

FIG. 11 is an explanatory diagram showing the basic configuration of a third embodiment of the air conditioning system according to the present invention.

12 is a diagram showing a control flow of the air conditioning system of FIG.

FIG. 13 is a diagram showing a configuration of a conventional air conditioning system.

[Explanation of symbols]

 1 desiccant outdoor air conditioner 2 indoor space 3 air conditioner (air conditioner) 6 humidifier 7 on-off valve 8 water supply pipe 10, 20, 30 controller 11, 21 temperature sensor 12 humidity sensor 200 heat pump 102, 140 blower 103 desiccant rotor 104 sensible heat Exchanger 210 Cooler (cold water heat exchanger) 220 Heater (hot water heat exchanger) A Outside air introduction path B Indoor air discharge path SA Supply air RA Return air EX Exhaust air OA Outside air ΔQ Cooling effect Δq Cooling amount by cold water ΔH By hot water Heating amount

Claims (11)

[Claims] 1. An air conditioner that circulates and processes indoor air, and an outdoor air conditioner that processes the outdoor air and guides the indoor air to the room, wherein the outdoor air conditioner adsorbs water in one of the indoor air and the outdoor air. In an air conditioning system including a desiccant regenerated by the other and a heat pump serving as a heat source for regenerating the desiccant, a humidifier is provided in an air supply path from the external regulator to the air-conditioned space. Air conditioning system. 2. A humidity sensor and a temperature sensor are provided in an air-conditioned space, and a control device for controlling the operation of the external air conditioner and / or the air conditioner based on the measured values is provided. The air conditioning system according to 1. 3. The temperature and humidity or these parameters are set in advance in the control device, and the humidifier is operated when the measured temperature exceeds the upper limit of the set temperature and the measured humidity falls below the lower limit of the set humidity. The air conditioning system according to claim 3, wherein: 4. The air conditioning system according to claim 2, wherein a dry-bulb temperature sensor is used as the temperature sensor. 5. The air conditioning system according to claim 2, wherein an absolute humidity sensor is used as the humidity sensor. 6. The air conditioning system according to claim 3, wherein a wet bulb temperature is used as the humidity parameter. 7. The air conditioning system according to claim 1, wherein the humidifier performs humidification in an isenthalpic process or a quasi-isenthalpic process during cooling. 8. The air conditioning system according to claim 1, wherein the humidifier is a water injection type or a vaporization type. 9. The air conditioning system according to claim 1, wherein the heat pump is a vapor compression heat pump. 10. The air conditioning system according to claim 1, wherein the heat pump is an absorption heat pump. 11. The control for increasing the capacity of the external air conditioner and decreasing the capacity of the air conditioner when the capacity of the heat pump of the external air conditioner has a margin.
An air conditioning system according to claim 1.